现代制造工程
現代製造工程
현대제조공정
MODERN MANUFACTURING ENGINEERING
2014年
8期
83-89
,共7页
TRIP钢板%前纵梁%数值模拟%遗传算法
TRIP鋼闆%前縱樑%數值模擬%遺傳算法
TRIP강판%전종량%수치모의%유전산법
TRIP steel plate%front longitudinal beam%numerical simulation%Genetic Algorithm (GA)
TRIP高强度钢板具有高强度、高应变率变形时的高动态吸能特性，符合现代汽车用钢材料的发展趋势。基于有限元法对TRIP600的汽车前纵梁冲压成形过程进行数值模拟，通过调整坯料外形，改善了成形质量；采用多元非线性回归模型分别拟合成形工艺参数（压边力、摩擦因数和拉深筋阻力）与破裂目标函数及回弹目标函数间的非线性关系，并基于NSGA-II多目标遗传算法，进行了成形工艺参数的优化，进一步提高了成形质量。
TRIP高彊度鋼闆具有高彊度、高應變率變形時的高動態吸能特性，符閤現代汽車用鋼材料的髮展趨勢。基于有限元法對TRIP600的汽車前縱樑遲壓成形過程進行數值模擬，通過調整坯料外形，改善瞭成形質量；採用多元非線性迴歸模型分彆擬閤成形工藝參數（壓邊力、摩抆因數和拉深觔阻力）與破裂目標函數及迴彈目標函數間的非線性關繫，併基于NSGA-II多目標遺傳算法，進行瞭成形工藝參數的優化，進一步提高瞭成形質量。
TRIP고강도강판구유고강도、고응변솔변형시적고동태흡능특성，부합현대기차용강재료적발전추세。기우유한원법대TRIP600적기차전종량충압성형과정진행수치모의，통과조정배료외형，개선료성형질량；채용다원비선성회귀모형분별의합성형공예삼수（압변력、마찰인수화랍심근조력）여파렬목표함수급회탄목표함수간적비선성관계，병기우NSGA-II다목표유전산법，진행료성형공예삼수적우화，진일보제고료성형질량。
TRIP steel plate which possesses high strength and high dynamic power-absorbing characteristic during fast strain rate deformation ,meet the development trend of steel used in modern automobile well .The forming process of a front longitudinal beam made of TRIP600 was simulated based on finite element method ,and the forming quality was improved by adjusting the profile of blank.The nonlinear relationship between forming parameters (blank holder force,friction coefficient,drawbead resistance) and objective function of crack and springback were fitted by multi-element nonlinear regression ,respectively.The multi-objective ge-netic algorithm,NSGA-II,was used to optimize the forming parameters ,which improved the forming quality further .
